Collector Armor

Collector Armor is a Body Armor set that can be purchased in the game, or possibly imported with your Mass Effect or Mass Effect 2 saves.

The Collectors' chitinous armor is flexible and even tougher than ballistic fibers. Its organic construction allows it to be self-healing, and the muscle-like tissue that assists movement ensures it is comfortable to wear despite its weight. This suit was originally adapted out of salvaged Collector technology by Cerberus, and is incredibly difficult to find on the galactic market. (source: in-game text)